Soyuz TMA-18M was a 2015 Soyuz spaceflight to the International Space Station. It provided the two twelve-months occupants (Scott Kelly and Mikhail Korniyenko) at the International Space Station with a fresh Soyuz capsule. TMA-18M was the 127th flight of a Soyuz spacecraft; the first having occurred in 1967. The ascent flight consisted of a Russian commander and two flight engineers from Denmark (ESA) and Kazakhstan respectively.[1] The flight launched in September 2015 and returned to Earth in March 2016.

Originally the third member should have been the British singer Sarah Brightman as a space tourist, but on May 13, 2015, she announced she had withdrawn from training.[8]

Japanese entrepreneur Satoshi Takamatsu trained as Sarah Brightman's backup, but he withdrew from the flight as the art projects he had planned to carry out would not be ready by the September launch date. He stated he would try for a later flight when his projects were ready to fly.[2]

Russian businessman Filaret Galchev was offered the seat, but he realized that he didn't have the time to prepare himself for the flight.[1]

Launches are separated by dashes ( – ), payloads by dots ( · ), multiple names for the same satellite by slashes ( / ). Cubesats are smaller. Manned flights are bolded. Launch failures are in italics. Payloads deployed from other spacecraft are (enclosed in brackets).